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  • A hemiketal is a compound that has the following general structural formula.

    R1 = alkyl, aryl,
    R2 = alkyl, aryl
    R3 = alkyl


    The functional group 1 in an organic molecule is called the hemiketal group; the carbon atom bearing the two oxygen atoms is the hemiketal carbon.

    see also cyclic hemiketal, ketal, hemiacetal

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